Today the owners of mobile devices running Windows Phone 8.1 and Windows Mobile 10 were able to try out all the benefits of full access to the file system with a utility called Windows Phone Internals unlocks bootloader most smartphones and Microsoft Lumia offers unlimited possibilities for editing the contents of the file system of the mobile operating system Windows.
Returning to the question about the benefits of this action, the developer Heathcliff74 states that allow root access rights to modify or delete the protected files, change various settings, and install custom firmware on the device. Windows Phone Internals also allows you to do a full backup of the device, so if something goes wrong, you can always return the unit to its original state.
Here is a list of Lumia Phones that can be unlocked
Lumia 520, 521, 525, 620, 625, 720, 820, 920, 925, 928, 1020 and 1320 are supported. These bootloaders can be unlocked.
What can I achieve by unlocking my device?
Here’s the List of Things Windows Phone Internals can Do
* You can unlock the bootloader of the specific Lumia Windows Phone models, and then enable Root Access.
*You can load your custom apps with higher privileges and without sandboxing in Windows Phone OS.
*You can create Backup images of your phone and can also access the file-system in Mass Storage Mode.
You can even install your custom ROMs.
Just like in every unlocking process, it is done at owners risk.